Probles is apredominantly Holarctic genus with about 44 species in the Palearctic region (Yu et al. 2012). Palearctic fauna of Probles is rather irregularly studied: West European species were revised by Horstmann (1971, 1981; Horstmann and Kolarov 1988), and Palearctic species of five small subgenera, Microdiaparsis Horstmann, Probles s. str., Rhynchoprobles Horstmann, and Rugodiaparsis Horstmann, were reviewed by Khalaim (2003), whereas the most species rich subgenus, Euporizon Horstmann, is virtually unknown outside Europe. Only two species of Euporizon, P. (E.) sibirica Khalaim, 2007 from Mongolia and Russian Siberia and P. (E.) vulnifica Khalaim & Sheng, 2009 from the Palearctic part of China, are known to occur in the East Palearctic region, and one Oriental species, P. (E.) vietnamica Khalaim, 2011, was recently described from Vietnam (Khalaim, 2011; Khalaim and Sheng 2009). Some species of Probles were recorded as parasitoids of the beetle families Ciidae, Curculionidae, Endomycidae, and Melandryidae in Europe (Horstmann 1971, 1981). In this paper, we describe three closely related new species of Euporzon belonging to one species-group. Three closely related species of the genus Probles Förster, P. fulgida sp. n., P. korusa sp. n., and P. rukora sp. n. differ from other Palearctic species of the genus based on a combination of long and weakly sinuate apically ovipositor and short temple. A portion of the key for identification of this species-group is provided here.